21352304154346 has 32 divisors (see below), whose sum is σ = 35256397265856. Its totient is φ = 9618136752000.

The previous prime is 21352304154341. The next prime is 21352304154367. The reversal of 21352304154346 is 64345140325312.

It is not an unprimeable number, because it can be changed into a prime (21352304154341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8789245 + ... + 10952416.

It is an arithmetic number, because the mean of its divisors is an integer number (1101762414558).

Almost surely, 2^{21352304154346} is an apocalyptic number.

21352304154346 is a deficient number, since it is larger than the sum of its proper divisors (13904093111510).

21352304154346 is a wasteful number, since it uses less digits than its factorization.

21352304154346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19742118.

The product of its (nonzero) digits is 1036800, while the sum is 43.

Adding to 21352304154346 its reverse (64345140325312), we get a palindrome (85697444479658).

The spelling of 21352304154346 in words is "twenty-one trillion, three hundred fifty-two billion, three hundred four million, one hundred fifty-four thousand, three hundred forty-six".